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Stolb23 [73]
2 years ago
3

Why does the inside of the thylakoid membrane become positively charged during the light-dependent reactions?

Biology
1 answer:
svet-max [94.6K]2 years ago
5 0

Why does the inside of the thylakoid membrane become positively charged during the light-dependent reactions?

a. H+  ions are released as water splits.

b. ATP synthase allows H+  ions to pass through the membrane.

c. ATP synthase produces ATP from ADP.

d. Carbon dioxide builds up in the stroma.

Answer:

a. H+  ions are released as water splits.

Explanation:

The water-splitting complex is associated with the lumen side of the PSII. Splitting of water during the light-dependent reactions of photosynthesis releases protons, electrons, and oxygen. For two molecules of water split, four protons and one molecule of molecular oxygen are released in the lumen of the thylakoid. These released protons make the inside of the lumen more positive during the light-dependent phase of photosynthesis.

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